Consolidated Statement Of Changes in Shareholders' Equity - 6 months ended Sep. 29, 2018 - USD ($) $ in Thousands		Class C Convertible Preferred Stock [Member]	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earnings [Member]	Total
Balance beginning at Mar. 31, 2018		$ 33	$ 392	$ (106,563)	$ 199,576	$ (4,248)	$ 539,286	$ 628,476
Beginning balance, preferred shares at Mar. 31, 2018		21,802						21,802
Beginning balance, common shares at Mar. 31, 2018			39,166,000	6,330,000
Net income							42,405	$ 42,405
Other comprehensive loss:
Pension liability adjustment ($202) pre-tax						(151)		(151)
Cash dividends:
Preferred dividends	[1]						(204)	(204)
Common dividends	[1]						(13,158)	(13,158)
Dividend payable							(25)	(25)
Activity related to equity-based plans			$ 1	$ (960)	4,892			3,933
Activity related to equity-based plans, shares			134,000	15,000
Stock-based compensation					2,065			2,065
Balance ending at Sep. 29, 2018		$ 33	$ 393	$ (107,523)	$ 206,533	$ (4,399)	$ 568,304	$ 663,341
Ending balance, preferred shares at Sep. 29, 2018		21,802						21,802
Ending balance, common shares at Sep. 29, 2018			39,300,000	6,345,000

[1] First and second quarter fiscal year 2019 dividend payment of $.20 per common share or common share equivalent paid on June 14, 2018 and September 6, 2018, respectively.